s390x-unknown-linux-gnu hangs in QEMU

[asomers]

rust-lang/libc#1235 added an integration test with the test harness enabled. It's libc's first integration test that uses the test harness, and it's hanging on s390x even though there are no tests enabled for that architecture. @gnzlbg thinks that the bug might lie in rustc, not QEMU.

[nagisa]

I think it is a QEMU issue. At least I think there is a build of s390x rustc done on real hardware for I think debian.

[gnzlbg]

@asomers same here as with the #58148 issue. It might be worth it to try to find if there is a qemu bug open upstream, and if not, fill one.

[asomers]

After more investigation, this looks like a QEMU issue. At least, QEMU doesn't spit out enough information to prove otherwise. The qemu process core dumps before it prints anything Rust-related.

[greg5678]

If you want to try Rust on an x390x system you can request access here.

[gnzlbg]

The problem is more all the work required to set up that in CI, than getting access itself.